package com.hmall.common.config;

import com.hmall.common.interceptor.UserInfoInterceptor;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
//配置类
@Configuration
//仅当类路径中存在 DispatcherServlet 类时，才会加载这个配置类。
@ConditionalOnClass(DispatcherServlet.class)

public class MvcConfig implements WebMvcConfigurer {
    /**
     * 向 Spring MVC 注册自定义拦截器。
     *
     * */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new UserInfoInterceptor());
    }
}